First off, I think you'll find this
thread interesting, it's about the same app I would like to have, but then for the TX.
Second, to be honest, I am also still a bit puzzled about your other questions...
There is (as of yet) no way to delete anything from ROM (alas not with a normally available app), but after a hard reset lots of things get copied to RAM, and those files CAN be deleted.
That way I got rid of DocumentsToGo (gonna put the newer version with PDF-support on it later), QuickTour and VersaMail.
AddIt, CardInfo, Expense and others are still there, whatever file I remove from RAM.
By the way, if it's suffecient for you, there are lots of apps that can make these apps 'invisble' in your launcher (for me that's not a solution, they are still there and that bugs me).
So, at the moment my LifeDrive is pretty clean right now, jsu not as clean as I would want. I have had lots of palm before this one, but knowing it has some stability-issues I am taking it slowly with installing things.
Like you I am testing some 'hack-like' apps first, and after I have a stable but tweaked device, I'll put my other apps on.
By the way, check the thread you started about deleting stuff 100%, I posted there too.